LG Electronics 32LD320 32LD320-ZA, 32LD320N 32LD320N-ZA 5. Serial number D/L

Only for training and service purposes

4.5. V-COM Adjust(Only 37/42/47LH4000-ZA)

- Why need Vcom adjustment?

AThe Vcom (Common Voltage) is a Reference Voltage of

Liquid Crystal Driving.

-> Liquid Crystal need for Polarity Change with every frame.

- Adjust sequence

· After enter Service Mode by pushing “ADJ” key.

· Enter V-Com Adjust mode by pushing “G” key at “10. V-

Com”

· As pushing the right or the left button on the remote

controller, Find the V-COM value that is stopped the Flicker.

· If there is no flicker at default value, turn down or turn up at

least 20 step and check the flicker. Then go to the default

value.

· Push the store button by “OK” key in the ADJ remocon.

4.6. Outgoing condition Configuration

- When pressing IN-STOP key by SVC remocon, Red LED are

blinked alternatively. And then Automatically turn off.

(Must not AC power OFF during blinking)

4.7. Internal pressure

Confirm whether is normal or not when between power

board's ac block and GND is impacted on 1.5 kV(dc) or 2.2

kV(dc) for one second

5. Serial number D/L

• press “Power on” key of service remocon.

(Baud rate : 115200 bps)

• Connect RS232 Signal Cable to RS-232 Jack.

• Write Serial number by use RS-232.

• Must check the serial number at the Diagnostics of SET UP

menu. (Refer to below).

5.1. Signal TABLE

CMD : A0h

LENGTH : 85~94h (1~16 bytes)

ADH : EEPROM Sub Address high (00~1F)

ADL : EEPROM Sub Address low (00~FF)

Data : Write data

CS : CMD + LENGTH + ADH + ADL + Data_1 +…+ Data_n

Delay : 20ms

5.2. Command Set

* Description

FOS Default write : <7mode data> write

Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0,

Phase

Data write : Model Name and Serial Number write in

EEPROM,.

5.3. method & notice

A. Serial number D/L is using of scan equipment.

B. Setting of scan equipment operated by Manufacturing

Technology Group.

C. Serial number D/L must be conformed when it is produced

in production line, because serial number D/L is mandatory

by D-book 4.0.

CMD LENGTH ADH ADL DATA_1 . . . Data_n CS DELAY

No. Adjust mode CMD(hex) LENGTH(hex) Description

1 EEPROM WRITE A0h 84h+n n-bytes Write (n = 1~16)

Row Line

Column Line

CLC CST

Panel

Gate Driv e IC

Source D r iv e I C

Circuit Block

Timing

Contro ll er

Power

Block

VCOM

Gamma

Refere nce V oltage

Gamma Reference

Voltage

Data(R,G,B) & C ontrol signal

Control sign al

Data(R,G,B) &

Control sign al

Inte rfa ce

TFT

Power I n pu t

Power Input

Data I n p ut

VCOM

Liquid

Crystal

VCOM

(Visual Adjust and control the Voltage level)

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